$OpenBSD: patch-v4l2uvc_c,v 1.3 2017/05/12 23:10:26 espie Exp $

Index: v4l2uvc.c
--- v4l2uvc.c.orig
+++ v4l2uvc.c
@@ -143,27 +143,17 @@ init_videoIn(struct vdIn *vd, char *device, int width,
     close(vd->fd);
     return -1;
 }
-int enum_controls(int vd) //struct vdIn *vd)
-{    
-  struct v4l2_queryctrl queryctrl;
-  struct v4l2_querymenu querymenu;
-  struct v4l2_control   control_s;
-  struct v4l2_input*    getinput;
 
-  //Name of the device
-  getinput=(struct v4l2_input *) calloc(1, sizeof(struct v4l2_input));
-  memset(getinput, 0, sizeof(struct v4l2_input));
-  getinput->index=0;
-  ioctl(vd,VIDIOC_ENUMINPUT , getinput);
-  printf ("Available controls of device '%s' (Type 1=Integer 2=Boolean 3=Menu 4=Button)\n", getinput->name);
-
   //subroutine to read menu items of controls with type 3
-  void enumerate_menu (void) {
+
+static  void enumerate_menu (int vd,  struct v4l2_queryctrl *queryctrl)
+{
+  struct v4l2_querymenu querymenu;
     printf ("  Menu items:\n");
     memset (&querymenu, 0, sizeof (querymenu));
-    querymenu.id = queryctrl.id;
-    for (querymenu.index = queryctrl.minimum;
-         querymenu.index <= queryctrl.maximum;
+    querymenu.id = queryctrl->id;
+    for (querymenu.index = queryctrl->minimum;
+         querymenu.index <= queryctrl->maximum;
          querymenu.index++) {
       if (0 == ioctl (vd, VIDIOC_QUERYMENU, &querymenu)) {
         printf ("  index:%d name:%s\n", querymenu.index, querymenu.name);
@@ -173,7 +163,23 @@ int enum_controls(int vd) //struct vdIn *vd)
         break;
       }
     }
-  }
+}
+
+#define enumerate_menu()	enumerate_menu(vd, &queryctrl)
+
+int enum_controls(int vd) //struct vdIn *vd)
+{    
+  struct v4l2_queryctrl queryctrl;
+  struct v4l2_control   control_s;
+  struct v4l2_input*    getinput;
+
+  //Name of the device
+  getinput=(struct v4l2_input *) calloc(1, sizeof(struct v4l2_input));
+  memset(getinput, 0, sizeof(struct v4l2_input));
+  getinput->index=0;
+  ioctl(vd,VIDIOC_ENUMINPUT , getinput);
+  printf ("Available controls of device '%s' (Type 1=Integer 2=Boolean 3=Menu 4=Button)\n", getinput->name);
+
 
   //predefined controls
   printf ("V4L2_CID_BASE         (predefined controls):\n");
